Road-grading machine.



No. 802,544. PATENTED OCT. 24, 1905t R. E. L J. DI ADAMS.

ROAD GRADING MACHINE.

APPLIATION FILED AUG. 11. 1904.

2 SHEETS-SHEET 1.

Roy E. Adams.

7 61 Hoz me al mnnsw. n. naman ca, mmwumcemvmns. wAsmuamujv c` No.802.544. PATENTED OCT. 24, 1905. R. E. a J. D. ADAMS.

ROAD GRADING MACHINE.

APLroATIoN FILED AUG.11. 1904.

2 SHEETS-SHEET 2.

el Hoz/mm3 t I ROY E. ADAMS AND JOSEPH D. ADAMS, OF INDIANAPOLIS,INDIANA;

SAID ROY E. ADAMS ASSIGNOR TO SAID JOSEPH D. ADAMS.

@OAD-GRADING MACHINE..

To f/JZ 11171.07@ it may cm1/cern:

Be it known that we, Roy E. ADAMs and .los EPH D. ADAMs,citizens of theUnited States, residing` at Indianapolis, in the county of Marion andState of Indiana; have invented certain new and useful Improvements inRoadrading Machines, of which the following is a specification.

, In a road-grading machine the draft is materially lessened by mountingthe wheels upon short stub-axles, which are in turn mounted uponhorizontal axes, and providing means by which the wheels may be tippedor swung about these horizontal axes which lie in the line of movementof the vehicle, so as to counteract the side thrust of the scraperwithout dragging the entire machine. Such mechanism has been shown inReissue Patent No. 10,666, dated December 1, 1885, as applied to two andthree wheel vehicles; but the construction shown therein cannot bereadily applied and operated upon the front wheel of a four-wheeledgrader. Difliculty is also experienced in graders of the type shown inapplying the pull to the scraper.

The objects of our invention are to provide an improved construction foroperating the swinging axles of the front pair of wheels, to provide animproved means for applying the pulling' force to the scraper, and toprovide such improvements in details of construction as may behereinafter pointed out.

rIhe accompanying drawings illustrate our invention.

Figure 1 is a central vertical section of a road-scraper embodying ourimprovements; Fig. 2, a plan of the scraper and immediatelysupportingframe; Fig. 3, atransverse vertical section through the front axle; Fig.4L, a central vertical section through the fifth-wheel, on a largerscale; Fig. a sectional detail on line 5 5 of Fig. 2, on a larger scale;Fig. 6, a detail of the turn-table, and Fig'. 7 a detail of thescraper-support.

In the drawings, 10 indicates the main frame supported at its rear bythe rear axle 11 and front wheels 12 and provided at its forward endwith a head 18, having a downward extension 111, which practically formsthe hingbolt of the iifth-wheel. The fifth-wheel 15 is provided with acentral opening' 16, which is larger at its bottom and tapered upwardlyto nearly iit pin 14, thus permitting considerable Specification ofLetters Patent.

Applicatll led August l1, 1904. Serial No. 220,382.

Patented Oct. 24, 1905.

tilting of the front axle without straining the parts. rI`he1ifth-wheel15 is supported by any suitable form of front axle 17, to the oppositeends of which are pivoted upon horizontal axes in the line of movementof the vehicle stud-axles 18, upon which the ground-wheels 19 arerotatably mounted. Each of the studaxles 18 is provided with a verticalarm 20,

and the two arms 2O are connected by a link' 21, carrying a segmentalrack 22, which meshes with a pinion 23, carried by a shaft 24, rotatablymounted in suitable bearings on the front axle 17. The construction ofthe front axle thus far described is similar to the construction of therear axle described and claimed in the patent previously mentioned;butin order to adapt this construction for use in a front axle thefollowingadditions are necessary: Secured to shaft 24 is a worm-wheel25, which meshes with a worm 9.6, carried by a vertical shaft 27,journaled in suitable bearings on the front axle 17. Journaled in thecenter of head 13 and passing through the center of stud 14 is avertical shaft Q8. rIhe upper end of shaft Q8 is provided with abevel-gear 29, which meshes with a pinion 30, carried by the forward endof a shaft 31, which shaft is mounted in suitable bearings on the mainframe and carried back to a point adjacent the rear of the machine,where it is provided with a crank 32 in convenient position for0peration by the single operator. Ihe lower end ofA shaft 28 isconnected with the Lipper end of shaft 27 by a longitudinally-extensibleuniversal joint. A yoke 33 is pivoted on a horizontal axis to the upperend of shaft 27. Pivoted to the upper end of yoke 33 at right angles tothe axis between shaft 27 and yoke 83 is a square shaft 34, the upperend of which telescopes within the square tubular shaft 35. The upperend of shaft 35 is in turn pivoted upon a horizontal axis, preferably atright angles to the axis between shaft 34 and yoke 33, to the lower endof the yoke 36, the upper end of which is in turn pivoted to the lowerend of shaft 28 upon a horizontal axis at right angles to the axisbetween said yoke and the tubular shaft By this means the front axle 17is perfectly free to swing upon a vertical axis and also to be twistedto the full extent of the lost motion between stud 14 and thefifth-wheel 15 and yet permit the easy swinging of the stud-shafts18upon their hori- IOO zontal axes at any time by a proper movement of thecrank 32. rIhe rear wheels are mounted in the manner described in thepatent already mentioned and are independently adjustable.

Forming part of head 13 is a rear yoke extension 13', which carriesavertical pin 40, to which is loosely pivoted the forward end of a frame41. Frame 41 extends back and is provided at its rear end with adownwardly and rearwardly projecting finger or arm 42, which isprojected through a carrier 43, transversely adjustable upon a track 44.The rear end of the frame 41 is supported by means of a pair of verticallinks 45, (only one of which is shown,) and each of these links issupported upon a crank 46, carried by a shaft 47, which at its rear endis provided with a worm-wheel 48, with which meshes a worm 49, carriedby a shaft 50, provided with a large hand-wheel 51, by means of whichcrank 46 may be swung so as to thus raise and lower the rear end offrame 41. Frame 41 carries near its rear end a'downwardly-projectingstud 52, upon which is loosely pivoted a turn-table 53, said turntablebeing provided with a flange 54, beneath which extend suitable hangers55, carrying supporting-rollers 56. The turn-table 53 is very looselypivoted upon pin 52, and the pin 52 is only intended to take the sidethrust of the parts now to be described.

Secured to the under side of table 53 is a frame 57, which forms adiametrical cord for a semicircular pull-bar, composed of an outer plate58 and an inner parallel plate 59, the two plates being' connected atshort intervals by horizontal radial struts 69. The inner plate 59 liesagainst a post 61, erected from a bracket 62, which is secured at itsends to the frame 41 and passes beneath the semicircular bar. Projectingthrough post 61 is a horizontal slidable locking-bolt 63, which isadapted to enter any one of a series of notches 64, formed in the loweredge of the plate 59. Pivoted at 65 upon bracket 62 is a bell-cranklever 66, at the elbow of which is pivoted one end of a link 67, theopposite end of said link being pivoted to the bolt 63. Bolt 63 isnormally urged forward by a spring 68, and lever 66 has its free endconnected to the forward end of a rod 69, which extends back to a pointconvenient of access of the operator, the arrangement being such thatwhen rod 69 is pulled backward from the position shown in the drawingsthe heel of the bell-crank lever will be thrown back of and below thepivotal axis 65, and thus prevent the bolt 63 from being accidentallydriven forward by the spring 68. Turn-table 53 is provided on its upperside with a segmental gear 70,into which meshes a pinion 71, carried bya shaft 72, rotatably mounted in suitable bearings in frame 41.Similarly mounted on frame 10 and convenient to access by the operatoris a shaft 73, and the forward end of this shaft is connected by alongitudinally-extensiblc universal joint 74, similar to the jointbetween shafts 27 and 28, with the rear end of shaft 72.

The ends of the two plates 58 and 59 are curved downwardly and joined attheir lower ends, and the scraper 74 is pivoted upon a horizontal axisto the lower ends of these plates. In order that the scraper 74 may havea wide rang'e of adjustment, as indicated by dotted lines in Fig. 7, Ipivot adjacent each pair of plates 58 and 59 a pair of links 75 and 76,one of which is shorter than and is nested within the other. The link 75is provided with a plurality of transverse openings, any one of whichmay be brought into register with openings 77, formed through the plates59 69, and adapted to receive a pin 78. The link 75 is of considerablelength and rests upon a cross-bar 79. rIhe other link 76 is providedwith a toe 76', which prevents itfrom dropping too low and holds it inposition to enter freely between a cross-bar 79 and a lower cross-bar80, so that when the scraper is turned up nearly square in a positionwhere the long links would no longer serve as adequate supports for thescraper the short link will come into action. The cross bars 79 might beomitted and the long link 75 used in connection with the lower holes 81;but in that case these long links would project behind 9 the scraper tosuch an extent that with the scraper on a sharp horizontal angle thelink at the forward end of the scraper would project out beyond thewheels and be likely to be broken off. By providing the two links andthe cross-bar 79 the long links are thrown up nearly vertical when thescraper is in its highest position and when the short links come intoposition for use. The short link is nested within the longer link insuch manner that it cannot pass entirely through the link. so that theshorter link cannot become misplaced, but is always in position to enterimmediately above the cross-bar 80.

In operation the pull of the team is transmitted through the fifth-wheelto head 13 and from thence through pin 40, frame 41, and post 61directly to the arc 58 59 60, so that the pull of the team is exerteddirectly upon the scraper instead of through the supporting turn-table,thus producing a very durable construction. The scraper may be set atany desired angle by withdrawing bolt 63 and turning shaft 73 in thedesired direction.

IVe claim as our invention'-V 1. In a road-scraper, the combination withthe main frame, and an axle pivoted thereon upon a vertical axis, of apair of stud-axles pivoted upon said axle upon substantially horizontalaxes, supportingwheelsjourn aled upon said stud-axles, and meansextending back along the main frame for swinging said studaxles andholding the same in desired positions of adjustment, said means beingoperable in various horizontal positions of the axle.

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ITIS

2. In a road-scraper, the combination with .the main frame, and an axlepivoted thereon zontal axes, supporting-Wheels journaled upon saidstud-axles, a link connecting' said studaxles for simultaneous movement,a vertical shaft passing axially through the vertical pivotal connectionbetween the main frame and mainl axle, and intermediate drivingconnections composed in part of auniversal joint between said verticalshaft and the link connecting the stud-axles.

3. In a road-scraper, the combination with the main frame, an Vaxlepivoted thereon upon a vertical axis, oi a pair of stud-axles pivotedupon said axle upon substantially horizontal axes, supporting-wheelsjournaled upon said stud-axles, a link connecting Said stud-axles forsimultaneous movement, a vertical shaft passing` axially through thevertical pivotal connection between the main trame and main axle, andintermediate driving connections composed in part ot alongitudinally-exten-l sible universal joint between said vertical shaftand the link connecting the stud-axles.

I. In a road-scraper, the combination with the main frame, ci' aturn-table carried thereby, a scraper carried by said turn-table, ahorizontal arc-bar carried by said turn-table, a driving-post carried bythe frame and arranged to engage the arc-bar to drive the same, andmeans for holding the scraper in desired positions of angularadjustment.

5. In a road-scraper, the combination with the main frame, of aturn-table carried thereby, a scraper carried by said turn-table, ahorizontal arc-bar carried by said turn-table composed of a pair o'l5substantially parallel plates and intermediate struts, a drivingpostcarried by the frame and arranged to engage the arc-bar to drive thesame, and means for holding the scraper in desired positions of angularadjustment.

6. In a road-scraper, the combination with the main frame, of aturn-table carried thereby, a scraper carried by said turn-table, ahorizontal arc-bar carried by said turn-table, a driving-post carried bythe frame and arranged to engage the arc-bar to drive the same, a boltarranged to engage said arc-bar, a bellcrank 66, a link 67 connectingsaid bell-crank and bolt, and means for operating the bellcrank.

7. In a road-scraper, the combination with the mainframe, of aturn-table carried thereby, a scraper carried by said turn-table, ahorizontal arc-bar composed of a pair of substantially parallel platesand intermediate struts carried by said turn-table, a driving-postcarried by the frame and arranged to engage the arc-bar to drive thesame, a bolt arranged to engage said arc-bar, a bell-crank 66, a link 67connecting said bell-crank and bolt, and means for operating thebell-crank.

8. In a road-scraper, the combination with the main frame, of asupplemental frame 4i. pivoted upon a vertical axis to said main frame,a turn-table loosely supported upon said su j pleinental frame, andcarrying a substantially horizontal arc-bar, a scraper carried by saidturn-table, a driving-post carried by said supplemental 'frame behindand in engagement with said arc-bars, and means for holding theturn-table in desired positions ol angular adjustment.

9. In a road-scraper, the combination with the main frame, of asupplemental 'frame 41- pivoted upon a vertical axis to said main frame,a turn-table loosely supported upon said supplemental frame, andcarrying a substantially horizontal arc-bar composed of a pair ofsubstantially parallel plates and intermediate struts, a scraper carriedby said turntable, a driving-post carried by said supplemental iframebehind and in engagement with said arc-bar, and means for holdingtheturntable in desired positions of angular adjustment.

10. In a road-scraper, the combination with a suitable supporting-trame,oll a scraperblade pivoted thereto, a pair of associated links, onelonger than the other, pivoted to the upper edge of said blade, asupporting-bar carried by the frame and supporting the longer of saidlinks, and means adjacent said bar for holding each of said links invarious positions of adjustment, for the purpose set -forth.

11. In a road-scraper, the combination with a suitable supporting frame,of a scraperblade pivoted thereto, a pair of links, one shorter than andnested within the other, a pair of cross-bars carried by saidsupportingframe and each forming a support for one of said links, andmeans for holding the links in various positions of adjustment withrelation. to the frame.

In witness whereof we have hereunto set our hands and seals, atIndianapolis, Indiana, this 15th day of July, A. D. 1904.

ROY E. ADAMS. [L. s.] JGSEPI-I D. ADAMS. [1.. s]

Witnesses: ARTHUR M. Hoon,

JAMES A. WALsH.

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